#include <iostream>

using namespace std;

int main(){

    string s1 = string("123456");
    cout << "s1: " << s1 << endl;

    string s2 = "abc";
    cout << "s2: " << s2 << endl;

    s1 = s2;
    cout << "s1.assign(s2): " << std::string("/") + s1 << endl;

    return 0;
}